TWI398367B - Rim for a bicycle spoked wheel, wheel and manufacturing method - Google Patents

Abstract

In a bicycle spoked wheel (11), at least one infraspoke zone (1501) has a reduced average wall thickness to reduce or eliminate the dynamic imbalance of the wheel (11) due to localized mass increases at the valve (7) and at a possible joint (134).

Description

Wheel, wheel for bicycle spoke wheel and manufacturing method thereof

The present invention relates generally to the field of bicycle spoke wheels, and more particularly to a rim for a bicycle spoke wheel, a spoke wheel including such a rim, and a method of making a bicycle spoke wheel rim.

Traditionally, a bicycle spoke wheel includes a rim, a hub, and a set of spoke connectors between the rim and the hub.

In particular, for the connection between the rim and the hub, a spoke is generally provided, the spoke having a widened head at a first end and an externally threaded portion at a second end opposite the first end.

The widened head of the spoke is housed in a seat having a suitable shape, which is typically fabricated on the hub or on a flange of the hub. In order to enable the spoke to extend in the radial direction or substantially in the radial direction, generally a bend is provided adjacent the first end of the spoke, however, the spoke may be omitted at the bend of the first end, For example, in the case of a hub as described in US 2002/0033635.

A second end of the spoke is threaded into a threaded bore, the threaded bore being typically fabricated on the rim, or preferably in a detachable connecting member of the threaded joint type or nut type, the detachable connection The component can be abutted against the seat hole in the rim by inserting a plate, for example as described in EP0936085.

It is also known to use different connecting means to connect to the spokes of the rim and the hub, for example wherein the head of the spoke is intended to be connected to the rim, the thread of the spoke is intended to be connected to the hub, the invention is not limited to any particular The type of spoke connection.

In the present invention and in the scope of the accompanying claims, the expression "spoke connector" means the set of spokes and the detachable connecting element, such as the threaded joint and the insert plate described above.

The hub is an element that is symmetrical about the axis of the bicycle wheel, the spoke connection being always distributed along the circumference of the wheel, i.e. the overall center of mass is located on the axis of the wheel. In particular, the spoke connectors can be equally spaced, or two or more spoke connectors can be grouped together, with sets of spokes being equally spaced along the rim.

Since the spoke attachment has different angles (curvedness) on one side and the other side of the hub, relative to the central plane of the wheel, and/or due to the tangential connection of the spokes to one side of the hub, and/or due to the particularly complex spokes For other reasons in the style, there may be different quality spoke connectors, but these spoke connectors are still a subset of the same spoke connectors that are regularly formed relative to the axis of rotation. Thus, in this case, the center of mass of the set of spoke connectors is also on the axis of rotation of the wheel, in other words the set of spoke connectors are balanced with respect to the axis of rotation.

It is known to provide sufficient structural strength along the entire rim, for example, from EP 0 715 001, EP 1 084 868 and the unpublished European patent application No. 0 342 s 9.3, in order to limit the weight of the rim, between the spokes. All areas or at least all areas between the spoke groups that are close together are made with a thin wall thickness to make the rim.

The geometry of the rims is known, including the rims in the document just mentioned, which are also elements that are symmetrical to the wheel axle.

Thus in the initial analysis, the wheel was dynamically balanced.

In practice, however, there is always a cause of imbalance or partial mass increase, which includes a check valve for the air inside the pneumatic tire, which may be of the type having a tube, a tubeless tube or a type having a tubular tire. . The gas nozzle is fixed in a suitable hole formed in the rim, which is usually made of brass and has a standard size and thus has a predetermined weight. The slight weight reduction caused by the receiving holes provided to the nozzle itself in the rim is insufficient to compensate for the local mass increase at the nozzle. Conversely, in the rim obtained by carbon fiber molding, since the rim has a greater thickness in the region in order to compensate for the weakening of the rim caused by the nozzle hole, the local mass at the nozzle is increased. Large is sometimes accompanied by a further increase in quality, as in the Bora wheel sold by Campagnolo Srl of Italy.

In the case of metal rims, the cause of the imbalance represented by the nozzle is accompanied by a second reason. In fact, the metal rim, in particular a metal rim made of steel or an aluminum alloy, is extruded by the rod in accordance with the desired rim profile, and then the rod is shaped into a circumferential shape by calendering. The connection of the ends of the rods is achieved in various ways, however, all the means add material, resulting in an increase in local mass. For example, a known method for achieving the connection is as follows: one or more pins are inserted into the corresponding holes, which are butt-joined in the wall of the end of the extruded rod; Inserting a certain length into the inner cavity of the extrusion rod, adding adhesive material; butt welding of the end with or without the addition of welding material, but inserting solid metal into the inner cavity of the extrusion rod anyway, In order to avoid the risk of deformation of the rim, the end can be gripped with suitable pliers during the welding process.

Either or both of the causes of the local mass increase result in the center of mass of the wheel mass no longer being on the axis of rotation of the wheel. From a kinetic point of view, the imbalance caused by this local mass increase leads to unfavorable wheel instability. Moreover, if the imbalance increases as the wheel speed increases, it becomes more dangerous when the driving speed is fast, such as when going downhill, and on the contrary, a very stable wheel is required at this time.

In the case of a metal rim, in order to reduce the problem of dynamic imbalance, it is known to manufacture a nozzle hole in a position diametrically opposed to the joint of the squeeze rod, however, the mass balance in the motion thus obtained is insufficient. Good wheel stability is provided because the additional mass in the area of the joint is typically different from the mass of the nozzle body, generally greater than the mass of the nozzle body. Moreover, in the case of wheels having an odd spoke pattern, since the spokes or a set of spokes occupy diametrically opposed positions, it is sometimes impossible to manufacture the nozzle holes in a position diametrically opposed to the joint of the squeeze rods, and The nozzle holes can only be made in close proximity. Thus, due to the aforementioned poor quality and/or due to the angle formed by the force caused by the increase in the two partial masses, the resultant force of the force cannot be cancelled.

Attempts have also been made to solve the problem of balance in such rims by attaching a piece of metal to the nozzle hole. However, in terms of providing additional components, in addition to increasing the weight of the rim, the metal sheet also has the risk of being separated in the use of the bicycle, which is not in line with aesthetics and aerodynamics, so from the point of view of manufacture and from the final product From the point of view, this method of providing additional components is unsatisfactory.

The technical problem based on the present invention will effectively reduce the dynamic imbalance of the bicycle wheel, with the greater goal of completely eliminating the dynamic imbalance of the bicycle wheel.

According to the present invention, the above technical problem is solved by a rim of a bicycle spoke wheel, the rim comprising a spoke mounting area and an infraspoke zone, characterized in that the spoke outer area comprises spokes having a first average wall thickness a first subset of the outer regions, and a second subset of the outer regions of the spokes, the average outer wall thickness of each of the outer spoke regions of the second subgroup being smaller than the first average wall thickness, the outer spokes of the second subgroup The area at least partially compensates for at least one local mass increase of the wheel.

In the context of this specification and the appended claims, the average wall thickness means the volume of the rim material on this area divided by the length of the area.

The local mass increase of the wheel may include a connection area suitable for connection to the air nozzle and/or rim of the rim.

The second subset, that is, the relatively thin wall region, may include an outer spoke region containing the first location in which the first local mass increase is present.

Alternatively or additionally, on a half rim centered at the first location, the second subset may include at least one pair of spoke outer regions configured to be symmetric with respect to the first location.

The above also applies to the case where there is a second partial mass increase, the second partial mass increase being less than the first partial mass increase, disposed in a second position in the outer spoke region that is substantially completely opposite the first position. The two local mass gains can actually be partially complementary. Furthermore, for asymmetrical changes in the wall thickness of the second subset of regions for compensation or partial compensation, small deviations from the position of the exact radial direction can be considered.

a second partial mass increase when there is a first partial mass increase at the first location, and a second location that is less than the first partial mass increase and disposed in an outer region of the spoke that is not completely opposite the first location The second subset may include an outer spoke region disposed on the same side as the second location with respect to a diameter through the first location and a half rim centered at the first location.

In particular, the second subset may include the spoke outer region closest to the first location having the same extent as the spoke outer region including the first partial mass increase.

In the case where the spokes are equalized separately, this may be an area outside the spokes disposed near the first position.

In other embodiments, when there is a first partial mass increase at the first position and a smaller than the first partial mass increase and the second partial mass disposed at the second position increases, the two local masses increase It can be compensated separately, which also applies to the case where the first and second partial mass increases are completely opposite or substantially opposite. In fact, it may be preferable in some cases to reduce the mass corresponding to the local mass increase in both regions involved in the increase in local mass to make the rim weight the lightest.

For example, the second subset includes an outer spoke region having a first location and an outer spoke region having a second location.

Alternatively or additionally, on a half rim centered at the first position, the second subset includes at least one pair of spoke outer regions configured to be symmetric with respect to the first position, and in the second position On the central half of the rim, the second subset includes at least one pair of spoke outer regions that are configured to be symmetric with respect to the second position.

In order to create an advantageous lightweight rim, in various embodiments, the second subset may also include at least one set of spoke outer regions that are balanced relative to the axle of the rim so that it does not affect the compensation for local mass increase.

In particular, the group of zones may comprise one or more pairs of diametrically opposed spoke-out regions.

If the extent of the area outside the spoke is different, such as where the spoke pattern is a spoke set, the extent of the spoke outer area of the second subgroup may all be the same or different.

In an advantageous embodiment, the material removal process is reduced to a minimum to reduce the thickness of the outer spoke region of the second subset, and/or to maximize the structural strength of the rim, the second subgroup consisting of 1 or 2 spoke outer regions. .

In another aspect, in order to minimize the weight of the rim, for the second subset, it includes all spoke outer regions except 1 or 2 spoke regions, or 1 or 2 It is advantageous to arrange all spoke-out regions between the spoke groupings outside the spoke outer zone.

The average wall thickness of the outer region of the spokes of the second subset may be the same, but this is not necessary.

The geometry of the outer region of the spokes of the second subset can be of various types.

such as. The mass distribution of the outer spoke regions of the second subset may be symmetrical or asymmetrical.

Moreover, in each of the spoke outer regions of the second subset, the transition from the thickness of the adjacent spoke mounting regions may be sharp or progressive along a certain rim length.

The reduction in the average wall thickness of the outer region of the spokes of the second subset can be accomplished on one or more of the rim walls, such as on a wall that is generally referred to as the lower bridge facing its center.

In order to allow for the necessary weight reduction while compensating while still maintaining sufficient structural strength, when the second subgroup includes an outer spoke region containing a hole for the gas nozzle, such region may have an intermediate region including a nozzle hole, and The two end regions have a wall thickness greater than that of the end regions.

The outer spoke region of the first subgroup, i.e., the relatively thick region, may have an average wall thickness equal to the average wall thickness of the spoke mounting region, which is typically the maximum wall thickness of the rim.

In its second aspect, the invention relates to a bicycle spoke wheel comprising the above rim.

In a third aspect thereof, the present invention relates to a method of manufacturing a rim of a bicycle spoke wheel, including the step of forming a rim having a spoke mounting area and an outer spoke area, characterized in that: A subset is formed using a first average wall thickness, and a second subset of the outer regions of the spokes is formed using an average wall thickness that is less than a first average wall thickness, and the outer regions of the second subset of the spokes are distributed to at least partially compensate for the wheel At least one local mass increase.

In particular, the rim can be the rim described above.

In a first variation, the method includes providing more structural fibers in the outer region of the spokes of the first subset than the outer regions of the spokes of the second subset in the matrix of the polymeric material in the mold forming the rim step.

In a second variation, the method includes the steps of forming a rim having equal average wall thicknesses for all of the spoke outer regions, and removing material from the second subset of the outer spoke regions.

The material removal step can be accomplished via machining, in particular via grinding, chemical etching or spark erosion.

The invention will be better illustrated with reference to the accompanying drawings, in which <RTIgt;

Fig. 1 is a perspective view showing a wheel 11 according to a first embodiment of the present invention. The illustrated wheel 11, particularly the front wheel, has a hub 12, a rim 13 and a set of spoke connections 14 between the hub 12 and the rim 13.

Referring also to Figure 2, each spoke attachment 14 includes a spoke 141 and an internally threaded member or joint 142 in a manner known per se. Typically, each spoke 141 has a head 143 at the first end that is bendable at the bend 144 when attached to the flange hub and externally threaded at the second end opposite the first end (see Not)). In the case where the hub cannot be connected, there is usually no bend, as disclosed in US 2002/0033635. The heads 143 of the respective spokes are received in respective bases 121 of the hub 12. The external threads of the spokes 141 engage the internal threads of the internally threaded member 142, abut the rim 13 at the respective base 131, and a metal plate 145 can be inserted between the internally threaded member and the rim. There is an opening 132 in the upper bridge 133 of the rim 13 for accessing the internally threaded member 142 by means of a tool.

However, any alternative configuration of the spoke attachment 14 can be used as is known in the art, such as where the internally threaded member 142 engages the hub 12 and the head 143 of the spoke engages the rim 13.

The spoke pattern of the wheel 11 is of the form of a spoke connection 14 that is equally spaced along the circumference of the rim 13.

Moreover, the spoke pattern of the wheel 11 is of the even type because the set of spoke connections 14 includes sixteen spoke connections, eight on the right side of the hub 12 and eight on the left side of the hub 12. Thus, sixteen spoke mounting regions 1501-1516 alternate with sixteen infraspoke zones 1601-1616 are defined on rim 13, including respective spoke attachment pedestals 131 and adjacent regions thereof. In particular, the sixteen spoke outer regions 1601-1616 extend along a circular arc of equal length.

The rim 13 is of a metal type and is formed by pressing a rod having a suitable cross section, rolling, and a joint end portion of the joint region 134.

In a position completely opposite to the joint region 134, a accommodating hole 135 for holding the check valve 7 of the pneumatic tire (not shown) circumscribing the rim 13 is formed on the rim 13.

The connection in region 134 is accomplished by butt welding of the ends of the extruded and calendered rods. In Fig. 3 showing a section of the rim 13 on which the gas nozzle 7 is mounted, a pair of solid metal inserts 136 can be seen in the inner chamber of the rim 13, which allows the ends to be made of suitable pliers during the welding process. Clamping without the risk of deforming the rim 13. The figure 4 better illustrates the insert 136.

As an alternative to soldering and inserting the insert 136, the connection in the region 134 can be achieved by a sleeve 136a as shown in Figure 5, which, as shown in Figure 6, has an interference fit or can be bonded. The agent is inserted into the inner chamber 137 of the rim 13. Alternatively, the connection in region 134 can be achieved by inserting a plurality of pins into the wall of the end of the rim.

The insert 136, which may include a possible weld material, or other equivalent element of the joint region 134, having a mass m1, represents a discontinuity in the mass of the wheel 11, in particular a local mass increase. The gas nozzle 7 is usually made of brass and represents another mass discontinuity of the wheel 11, in particular another partial mass increase. For the sake of simplicity, hereinafter, the mass reduction due to the presence of the nozzle 7 minus the presence of the hole 135 for the nozzle 7 is indicated as the mass m2 of the nozzle 7. As mentioned above, the mass m1 is generally not equal to the mass m2, so that the wheel 11 produces a dynamic imbalance, although the joint region 134 is completely opposite to the hole 135 for the gas nozzle 7. In most cases, the mass m1 of the connection is greater than the mass m2 of the nozzle, which we must consider in the current embodiment and in the following embodiments. In order to reduce or even eliminate the imbalance of the wheel 11, that is, to at least partially compensate for the above-described local mass increase, in the rim 13, although the spoke outer regions 1602-1616 each have a mass of mz, the spokes including the connecting region 134 are excluded. The area 1601 has a small mass of mz-m3. Like the similar regions in the embodiment to be described later, this reduced-mass spoke outer region 1601 is blacked out in FIG. 1 for illustrative purposes, but in practice it may have other parts of the rim 13 The same color, or different coloring, has no effect.

The mass reduction m3 in the spoke outer region 1601 can be obtained by material removal processing to reduce the average wall thickness of the rim in this region 1601.

The material removal process can be, for example, a mechanical process, in particular a grinding process, a chemical process, an electrical discharge process, and the like, as disclosed in the above-mentioned documents EP 0 715 001, EP 1 084 868, and the unpublished European Patent Publication No. 03254419.3. Doing so, the above documents are incorporated herein by reference.

Although in Figures 1 and 3, the reduction in the thickness of the spoke outer region 1601 is on the lower bridge 139 of the rim 13 (Fig. 2), the reduction in thickness may or may be exactly at the upper bridge 133 or Side walls 138a, 138b (Fig. 2).

Further, as in the views of the other embodiments, although in FIGS. 1 and 3, the thickness reduction of the spoke outer region 1601 is sharp, the transition from the nearby spoke mounting regions 1501 and 1516 may be employed. Different geometric shapes. In particular, this transition can be made gradually along a rim of a certain length, that is, avoiding steep edges, and in another aspect, a fillet with a suitable radius of curvature or with a suitable curve change. Furthermore, the removal of material can take place from the outside of the rim 13 and/or from the inside of the chamber 137 without any effect. For the purposes of the present invention, it is important that the material is removed to provide the required mass reduction, in other words, the average wall thickness is reduced.

Finally, it should be noted that although in the first and third figures, the spoke outer regions 1602-1616 and the spoke mounting regions 1501-1516 have the same thickness, this is not essential. In particular, all of the outer spoke regions have a reduced thickness, but the extent of the reduction in region 1601 is greater, and is included within the scope of the present invention.

In the dynamic condition, the resultant force acting on the wheel 11 can be expressed by the following formula (1), wherein, as in the latter formula, the vector is expressed in bold: F = F1 + F2 + F3 (1) where the force component is It is expressed by the following formula: F1 = m1 × ω ² × R1 (2) F2 = m2 × ω ² × R2 (3) F3 = m3 × ω ² × R3 (4) where ω represents the angular velocity of the wheel 11, R1 R2 and R3 represent the distance from the center of the wheel 11 to the centroid of the joint region 134, m1 to the mass 7 of the nozzle 7 and the mass of the outer region 1601 of the spoke, respectively.

It should be noted that R1, R2, and R3 are substantially equal to each other, and the three component forces are along the diameter D common to the bonding region 134 and the gas nozzle 7.

In addition, attention should be paid to the first component force F1 in the formula (1), that is, the effect of the joint point of the region 134, and the second component force F2, that is, the effect of the gas nozzle 7, and the third component force F3, that is, the spokes. The effect of the mass reduction of the outer region 1601 relative to the remaining spoke mounting regions 1602-1616 is reversed.

Therefore, the above formula (1) is simplified to the scalar representation of the following formula (5): F = m1 × ω ² × R1 - m2 × ω ² × R2 - m3 × ω ² × R3 = (m1 - m2 - m3) × ω ² × R1 (5) Even if the mass of the outer spoke region 1601 is small, the value of the resultant m3 is small, for example, only 1 g or 2 g, the value of the resultant force F is close to zero, and the dynamic imbalance of the wheel 11 is relative to all the spokes. The area is the same as the wheel of the same mass mz, and the mode of the resultant force in the above-mentioned type of wheel is obtained by the formula (6): F'=m1×ω ² ×R1-m2×ω ² ×R2=(m1 - ^m2 ) × ω ² × R1 (6) Reasonably select the mass reduction m3 of the spoke outer region 1601 relative to the remaining spoke mounting regions 1602-1616 due to the presence of the pair of inserts 136 or other engagement types and the nozzle 7 The resulting imbalance can be completely eliminated. In fact, if the mass reduction is obtained by the following formula (7): m3 = m1 - m2 (7) The value of the resultant force F is equal to zero.

Therefore, the value of the mass reduction m3 is employed, although the rim 13 without the nozzle 7 as it is usually sold will be unbalanced, once the nozzle 7 is installed, the spoke connection and the hub are mounted, and the wheel 11 will The perfect balance. In this aspect, it is worth emphasizing that the values of the masses m1 and m2 of the gas nozzle 7 and the joint insert 136 are predetermined, so that the value of the mass m3 to be removed in the spoke outer region 1601 can be easily calculated.

Example 1

Consider a standard size brass nozzle 7 for road bikes having a mass of 6 g and a joint with a pair of aluminum inserts 136 having a mass of 10 g.

The mass of the spoke outer region 1601 is reduced by m3 to 4g, and the wheel 11 is perfectly balanced.

Figure 7 depicts a wheel 21 in accordance with a second embodiment of the present invention, and Figure 8 depicts a cross section of an associated rim 23 incorporating a gas nozzle 7.

The wheel 21 is different from the wheel 11 of Fig. 1 in that the thickness of the spoke outer regions 2602 and 2616 adjacent to the spoke outer region 2601 including the joint region 234 is reduced, so that the mass is also reduced, as opposed to The remaining spoke outer regions 2601 and 2603-2615 of mass mz, the spoke outer regions 2602 and 2616 have mass reductions of mz-m4 and mz-m5, respectively.

In the dynamic condition, the resultant force acting on the wheel 21 can be expressed by the following formula (8): F = F1 + F2 + F4 + F5 (8) where F4 = m4 × ω ² × R4 (9) F5 = m5 × ω ² × R5 (10) Wherein R4 and R5 represent the distance between the mass reduction m4 from the center of the wheel 21 to the outer spoke region 2602 and the centroid of the mass reduction m5 of the outer spoke region 2616, respectively, and other symbols are described with reference to the first embodiment above.

It should also be noted that the forces F4 and F5 each form an angle α of 11.25° (one-third of a week) with a diameter D extending between the joint region 234 and the gas nozzle 7, the forces F1 and F2 along This diameter acts in the opposite direction. If the masses m4 and m5 are the same, the resultant force of the forces F4 and F5 acts along the diameter D, opposite to the direction of the force F1.

Even if the values of the masses m4 and m5 are very limited, such as only 1 g or 2 g, and all of the sixteen spoke outer regions 2601-2616 have the same wheel 11, the dynamic imbalance of the wheel is also reduced (Equation (6)).

In the special case where the masses m4 and m5 are equal and the distances R1, R2, R4 and R5 are considered to be equal to each other, the above formula (8) is simplified to the scalar representation of the following formula (11): F = m1 × ω ² × R1 - m2 × ω ² × R2 - m4 × ω ² × R4 × cos α - m5 × ω ² × R5 × cos α = (m1 - m2 - 2 × m4 × cos α) × ω ² × R1 (11)

By reasonably selecting the values m4 and m5, the imbalance due to the presence of the other engagement types in the insert 136 or the region 234 and the nozzle 7 can be completely eliminated, eliminating the values m4 and m5 of the absolute value of the resultant force F as follows The formula shown in formula (12): m4=m5=(m1-m2)/2×cos α 12)

Example 2

Under the above conditions, and using the values of the masses m1 (10g) and m2 (6g) provided in Example 1, it can be concluded that when the values of the masses m4 and m5 of the spoke outer regions 2602 and 2616 are each approximately 2.2 g. The wheel 21 is perfectly balanced.

It will be appreciated that as an alternative to spoke outer regions 2602 and 2616, the reduction in mass may be on the adjacent spoke outer regions 2603 and 2615 or adjacent to the spoke outer regions 2604 and 2614, only in mass reduction. The smaller values take into account the greater angle formed by the associated force with the diameter D common to the joint region 234 and the gas nozzle 7. In this case, the amount of material that should be removed is thus greater than the reduced mass of the spoke outer regions 2602 and 2616.

It will also be appreciated that intermediate embodiments between the first and second embodiments described above are possible, with spoke outer regions 2601, 2602 and 2616 or spoke outer regions 2601, 2603 and 2615, or, moreover, spoke outer regions 2601 The mass on 2604 and 2614 is reduced by a suitable value.

Figure 9 depicts a wheel 31 in accordance with a third embodiment of the present invention, and Figure 10 depicts a cross-section of the associated rim 33 with the nozzle 7. Figure 11 is an enlarged view of a portion of the rim 33.

The wheel 31 differs from the wheel 11 in FIG. 1 in that, in addition to the hole 335 for the nozzle 7, the spoke outer region 3609 of mass mz, not only the spoke outer region 3601 including the joint region 334, Moreover, the thickness of all remaining spoke outer regions 3602-3608 and 3610-3616 is reduced, and thus the quality is also reduced, specifically mz-m3.

It is immediately understandable that due to the reduced thickness of the completely opposite outer spoke regions, such as regions 3602 and 3610, the forces generated are equal and opposite, and can cancel each other out.

Therefore, in the dynamic condition, the resultant force acting on the wheel 31 can be expressed again by the above formula (1).

It should be understood that the thickness reduction of the outer spoke regions 3602-3608 and 3610-3616 is different from the spoke outer region 3601, such as (mz - m3) ± m6, to obtain the same operational expression (1) of the resultant force.

In addition, it should be understood that reducing the thickness in only one or several pairs of completely opposite spoke outer regions 3602-3608 and 3610-3616, such as mass mz-m3 or (mz-m3) ± m6, to obtain the same resultant force The expression (1). For example, the mass of the spoke outer regions 3605 and 3613 can be reduced, or the spoke outer regions 3603, 3611, 3605, 3613, 3607, 3615, and the like.

Figure 12 schematically depicts a wheel 41 in accordance with a fourth embodiment of the present invention, and Figure 13 depicts a cross section of an associated rim 43 incorporating a gas nozzle 7. Figure 14 is an enlarged view of a portion of the rim 33.

The pattern of the spokes of the wheel 41 is still that the spoke connections 14 are equally spaced along the circumference of the rim 43.

However, the pattern of the spokes of the wheel 41 is of the odd type because the set of spoke connections 14 includes twenty-one spoke connections, fourteen on the right side of the hub 42, and seven on the left side of the hub 42.

Thus, twenty-one spoke mounting regions 4501-4521 and twenty-one spoke outer regions 4601-4621 are defined.

The aperture 435 used by the air supply nozzle 7 is not in a completely opposite position to the engagement region 434, and the engagement region 434 has a base 131 for the spoke connection 14. Therefore, the angle between the hole 435 for the gas nozzle 7 and the diameter D1 passing through the joint region 434 is about 8.5 (one-fourth of a circumference).

According to the present invention, in order to reduce or even eliminate the dynamic imbalance of the wheel 41 due to the local mass m1 of the bonding region 434 and the mass m2 of the air nozzle 7, the thickness of all other spoke-out regions except the spoke outer region 4612 is reduced. Thus, the mass is also reduced, wherein the outer spoke region 4612 is located at a mirror symmetrical position with respect to the outer diameter portion 4611 of the diameter D1, the outer spoke outer region 4611 including the aperture 435 for the air supply nozzle 7.

Also in Fig. 13, for the purpose of illustration only, the reduced spoke outer regions 4601-4611 and 4613-4621 are blackened.

For the present embodiment, the "additional mass" m7 of the spoke outer region 4612, i.e., the additional mass opposite the mass reduction m3 that is not performed in this spoke outer region 4612, is considered, rather than the reduction in the quality of the different spoke outer regions. , the resultant force F can be more easily as shown in the following formula (13): F = F1 + F2 + F7 (13) where the absolute value of the force F7 is obtained by: F7 = m7 × ω ² × R7 (14) where R7 is The distance from the center of the wheel 41 to the center of mass of the mass m7 is referred to the first embodiment above.

The distances R1, R2, and R7 can be considered to be substantially equal to each other.

The component force F7 and the component force F2, that is, the effect of the gas nozzle 7, form an angle θ of about 8.5° (forty-fourth of the circumference) with the diameter D1 passing through the joint region 434.

In the case of the wheel 41, it is possible to reduce the dynamics even with a very small mass reduction value of the regions 4601-4611 and 4613-4621, for example 1 or 2g, with respect to all of the twenty-one spoke outer regions. Balance and eliminate this imbalance by appropriately selecting this quality reduction value.

When the resultant force of the forces F1 and F2 due to the local mass increase caused by the joint region 434 and the gas nozzle 7 - the resultant force is compensated by the force F7 - the angle formed by the diameter D1 is not a, the appropriate non- Symmetrically machining the spoke outer region 4602, and/or further providing a suitable asymmetric thickness reduction in the spoke outer region 4612 substantially perpendicular to the diameter of the region, and/or in a non-central position of the spoke outer region 4611 The hole 435 for the nozzle is used to move the center of mass of the "additional mass" m7.

Example 3

Consider a standard size brass nozzle 7 for road bikes with a mass of 6g and a pair of aluminum inserts 136 joints with a mass of 7g.

The "additional mass" m7 of the spoke outer region 4612 is 2.6 g, and the resultant force F is substantially zero, so that the wheel 41 is substantially balanced.

Also, in the case of the embodiment just described, it will be appreciated that the other spoke mounting areas of the spoke mounting areas 4601-4611 and 4612-4621 can be maintained at their original thickness or otherwise machined. For example, it is possible to determine a plurality of sets of equidistant spoke-out regions, irrespective of their absolute values of equal mass, the component forces cancel each other out, for example, triplets 4303, 4310, 4317 and 4307, 4314, 4321 and the like, or groups Seven spokes outside the area.

Figure 15 schematically depicts a wheel 51, in particular a rear wheel, in accordance with a fifth embodiment of the present invention, and Figure 16 depicts a cross-section of the associated rim 53 with the nozzle 7.

The pattern of the spokes of the wheel 51 includes twenty-four spoke connections 14, three in groups, divided into eight groups. Eight spoke set connection regions 5501-5508 are thus determined, each comprising three spoke attachment bases 131, the spoke set connection regions alternating with the eight spoke outer regions 5601-5608. In the spoke set connection regions 5501-5508, twenty-four spoke mounting regions are identified, wherein for simplicity, only regions 5505a, 5505b, and 5505c are identified in Figure 15, and another sixteen spoke outer regions, For the sake of simplicity, only regions 5604a, 5604b, 5605a, and 5605b are indicated in FIG.

Therefore, the pattern of the spokes of the wheel 51 is of an even type, and the hole 535 for the nozzle 7 can advantageously be disposed opposite the joint area 534 along the diameter D.

The spokes are combined and the extent of the area outside the spokes is not the same, which does not affect the application of the inventive concept.

Therefore, the above-described implementation can be reduced or even eliminated by the local mass m1 of the bonding region 534 and the m2 of the air nozzle 7 in the same manner as the concept of the first, second or third embodiment described above. The generalization of the examples is valid.

According to the first method, the above-described concept of the present invention can be applied only by considering the longest spoke outer region 5601-5608 between the spoke group connection regions.

As an example, in the wheels of Figs. 15 and 16, the embodiment corresponding to the third embodiment is explained, in other words, except for the spoke outer region 5605 including the hole 535 for the nozzle 7. The spoke outer regions 5601-5604 and 5606-5608 in the spoke set connection region are reduced in thickness and thus their mass is also reduced. Also, in Fig. 15, the outer region of the spoke having a reduced thickness is blackened for the purpose of illustration only.

It should also be noted that in Fig. 16, the joint uses the sleeve 136a as shown in Figs. 5 and 6, but in this case, the replacement described above with reference to the first embodiment can also be employed. Engagement device.

The resultant force F can be expressed again by the formula (1), and a perfect balance can be obtained, as shown in the following example.

Example 4

Consider a standard size brass nozzle 7 for road bikes with a mass of 6g and a pair of aluminum sleeve 136a joints with a mass of 11g.

The spoke outer region 5601 (and the spoke outer regions 5602-5604 and 5606-5608) has a mass reduction m3 of 5 g and a resultant force F of zero, so that the wheel 51 is perfectly balanced.

Depending on the method, considering the spoke outer regions 5605a, 5605b and similar regions, the concept of the above invention can still be applied in the usual sense.

As just one example, in one solution in accordance with the second embodiment, the mass can be reduced on spoke outer regions 5604b and 5605a and/or spoke outer regions 5604a and 5605b and/or spoke outer regions 5604 and 5605.

Figure 17 is a schematic depiction of a wheel 61, in particular a rear wheel, in accordance with a sixth embodiment of the present invention, and Figure 18 depicts a cross-section of the associated rim 63 with the air nozzle 7.

The pattern of the spokes of the wheel 61 includes twenty-one spoke connections 14, three in groups, divided into seven groups. The seven spoke set connection regions 6501-6507 are thus determined, each comprising three spoke attachment bases 131, the spoke set connection regions alternating with the seven spoke outer regions 6601-6607. In the spoke set connection region 6501-6507, twenty-one spoke mounting regions are identified, wherein for the sake of simplicity, only regions 6504a, 6504b, and 6504c, and fourteen additional spoke regions are indicated in FIG. For the sake of simplicity, only regions 6604a and 6604b are indicated in Figure 17.

Therefore, the pattern of the spokes of the wheel 61 is of an odd type, and the hole 635 for the nozzle 7 is not at a position opposite to the diameter of the joint region 634, at this position having the base 131 for the spoke connection 14. Therefore, the angle γ between the hole 635 for the gas nozzle 7 and the diameter D1 passing through the joint region 634 is approximately 25.7° (one-fourth of the circumference).

Also, in Fig. 18, the joint is a sleeve 136a as shown in Figs. 5 and 6, but the alternative joining device described above with reference to the first embodiment can also be employed.

Similarly, in the case where the spoke patterns are three groups, the number of groups is odd (or other number of spoke connection groups), the spokes are grouped together, and thus the range of the outer area of the spokes is not the same, which does not apply to the concept of the invention. Therefore, while considering the wide spoke outer regions 6601-6607 between the spoke group connection regions, and the spoke outer regions 6604a, 6604b and the like, it is possible to reduce or even reduce the same manner as the concept of the fourth embodiment described above. Eliminating the dynamic imbalance of the wheel 61 due to the local mass m1 of the bonding region 634, and the m2 of the gas nozzle 7 is effective for all of the generalizations of this embodiment.

As an example only, in the wheel 61 of FIGS. 17 and 18, in order to reduce or even eliminate the dynamic imbalance of the wheel 61 due to the local mass m1 of the bonding region 634, and the m2 of the air nozzle 7, in the region other than the spokes The thickness of the spoke outer regions 6601-6607 of all spoke outer regions between the representative spoke set connection regions of 6605 is reduced, and thus the mass thereof is also reduced, wherein the spoke outer region 6605 is located with respect to the diameter D1 and the spokes The outer region 6604 is in a mirror symmetrical position, and the outer spoke region 6604 includes a hole 635 for use with the gas supply nozzle 7. Similarly, in Fig. 17, the reduced thickness outer spoke regions 6601-6604 and 6606-6607 are blacked out for illustrative purposes only.

Considering the "additional mass" m7 of the outer spoke region 6605, that is, the additional mass opposite the mass reduction m3 that is not performed in this spoke outer region 6605, rather than the reduction in the mass of the outer region outside the spoke, the resultant force F can again It is represented by the formula (13).

The component force F7 and the component force F2, that is, the effect of the gas nozzle 7, form an angle γ of about 25.7° (one-fourth of the circumference) with the diameter D1 passing through the joint region 634.

Similarly, in the case of the wheel 61, the wheel is identical to all seven spoke outer regions, and even with a very small mass reduction value of the regions 6601-6604 and 6606-6607, for example 1 or 2 g, the dynamics can be reduced. Balancing, and this imbalance is substantially eliminated by appropriately selecting such a reduced mass value.

Example 5

Consider a standard size brass nozzle 7 for road bikes having a mass of 6 g and a joint with a pair of aluminum sleeves 136a having a mass of 11 g.

Except for the spoke outer region 6605, the mass reduction m3 of all spoke outer regions 6601-6604 and 6606-6607 between the other spoke group connection regions has a value of 6g, and the resultant force F is substantially zero, so that the wheel 61 is substantially balanced.

As just another example, in the case where the resultant force of F1 and F2 forms an angle different from γ with the diameter D1, the mass outside the spoke outer region 6604a and/or the spoke outer region 6604b may be additionally reduced to more accurately compensate. The resultant force of the forces F1 and F2 due to the increase in the local mass of the joint region 634 and the gas nozzle 7.

In the previous embodiment, it has always been considered that the mass m1 of the joint is larger than the mass m2 of the gas nozzle, since this is the most common case. In another aspect, however, those skilled in the art will appreciate that if the mass m1 of the joint is less than the mass m2 of the gas nozzle, the previously described solution should be implemented with the necessary modifications.

Of course, it should also be understood that the above description with reference to the first embodiment relating to the type and geometry of material removal processing is effective for all other embodiments.

Figure 19 depicts a wheel 71, in particular a rear wheel, in accordance with a seventh embodiment of the present invention, and Figure 20 depicts a cross-section of the associated rim 73 with the air nozzle 7. Figure 21 is an enlarged view of a portion of the rim 73.

The spoke pattern of the wheel 71 is the same as that described above with reference to the wheel 51 of the fifth embodiment (Fig. 15), of the even type, with twenty-four spokes connected, three in a group. Thus, eight spoke set connection regions 7501-7508 and eight spoke outer regions 7601-7608 are identified. In the spoke set connection region 7501-7508, twenty-four spoke mounting regions are identified, wherein for simplicity, only regions 7505a, 7505b, and 7505c are identified in Figure 19, and another sixteen spoke outer regions, For the sake of simplicity, only regions 7605a and 7605b are indicated in Figure 19.

However, in the wheel 71, the rim 73 is made of a composite material which is formed by molding a fibrous material such as carbon fiber, and forming a mesh structure or curing in a matrix of a polymeric material. Manufacturing details of the rim 73 can be found in EP 1 231 077, for example, incorporated herein by reference. The rim 73 is a single piece and, therefore, does not have any joints.

Also in the case of the rim 73, there is still a discontinuity or increase in the local mass represented by the gas nozzle 7, which according to the invention is dynamically compensated by the mass reduction obtained by the thickness reduction of certain spoke outer regions.

In the case where the rim is made of a composite material, in the manner described above, a reduction in thickness can be obtained by subsequent material removal processing in accordance with the above-described geometry.

This processing can be advantageously obtained without the subsequent material removal processing, but directly in the manufacturing step of the rim 73, by reducing only some of the material in the desired area of the mold. In this regard, it should be noted that, as described, for example, in the above-mentioned EP 1 231 077, the carbon fiber material in the matrix of the polymeric material is obtained in layers, which are layered to obtain the desired thickness of different regions of the rim, such as Different thicknesses of the bridge 139, the upper bridge 133 and the side edges 138a, 138b (Fig. 2). Thus, it is possible to reduce the mass in accordance with the present invention to at least partially compensate for those areas where the local mass increase due to the gas nozzle 7 is configured with fewer layers.

Assuming that in the case of the one-piece rim 73, the gas nozzle 7 is the only local mass increase, in the present embodiment, the thickness is reduced on the spoke outer region 7605 including the hole 735 for the gas nozzle 7.

In the dynamic condition, the resultant force of the centrifugal force acting on the wheel 71 can be expressed by the following formula (15): F = F2 + F8 (15) wherein the absolute value of the force F8 is obtained by: F8 = m8 × ω ² × R8 16 Wherein R8 is the distance from the center of the wheel 71 to the spoke outer region 7605 relative to the centroid of the remaining spoke outer regions 7601-7604 and 7606-7608, the remaining spoke outer regions 7601-7604 and 7606- The 7608 also extends between the spoke group regions, and the other symbols are as described above.

It should be noted that in the case of the wheel 71, the force F8 and the force F2, that is, the effect of the local mass increase due to the nozzle 7, are reversed along the diameter D2 passing through the nozzle 7.

Therefore, similarly, with respect to the wheels of all eight spoke outer regions 7001-7608 extending between the spoke group regions, even if the spoke outer region 7605 has a very small mass reduction value, such as 1 or 2 g, the dynamics can be reduced. Unbalanced, and this imbalance is eliminated by appropriate selection of this quality value.

In fact, if: m8 = m2 (17) the resultant force F is equal to zero, the system including the rim 73 and the air nozzle 7 is perfectly balanced, just like the wheel 71.

Example 6

Consider a standard size brass nozzle 7 for road bikes having a mass of 6 g and ignoring the effect of the holes 735 for the nozzle 7.

The force F2 having an absolute value of m2 × ω ² × R2 is compensated by the 6g mass reduction of the outer spoke region 7605 with respect to the remaining outer spoke regions 7601-7604 and 7606-7608.

Figure 22 shows a wheel 81, particularly a rear wheel, in accordance with an eighth embodiment of the present invention. Fig. 23 is a cross-sectional view showing the associated rim 23 to which the air nozzle 7 is attached. A portion of the rim 23 is shown enlarged in Fig. 24.

The spoke pattern of the wheel 81 is the same as that described above with reference to the wheel 51 of the seventh embodiment (Fig. 19), and is of an even type having twenty-four spokes connected in three groups. Thus, eight spoke set connection areas 8501-8508 and eight spoke outer areas 8601-8008 are identified. In the spoke set connection area 8501-8508, twenty-four spoke mounting areas are identified, wherein for simplicity, only areas 8505a, 8505b, and 8505c, and sixteen additional spoke areas are indicated in Figure 22, where For the sake of simplicity, only regions 8605a and 8605b are indicated in Figure 22.

In the wheel 81, the rim 83 is also made of a single piece of composite material so that it has no joint, but the local mass represented by the gas nozzle 7 is increased.

The compensation according to the present invention is performed by the mass reduction of the spoke outer region 8605 including the hole 835 for the gas nozzle 7 as in the seventh embodiment described above.

However, in the case of the rim 83, the thickness reduction of the spoke outer region 8605 relates only to the ends 871 and 872 of the region itself, while in the intermediate portion 873 of the spoke outer region 8605, there is a hole 835 for the nozzle 7 thereon. The wall thickness of the rim 83 is not reduced, and even increases with respect to the rest of the rim 83. In this case, the area of the aperture 835 for the air nozzle 7 representing the weakness of the rim 83 is maintained at a suitable thickness that provides the necessary structural strength to the rim 83.

Since the mass center of the reduced mass is still along the diameter D2 passing through the nozzle 7, wherein the value of R8 is slightly smaller than the value of R8 in the example 6, the dynamic force acting on the wheel 81 can be again determined by the formula under dynamic conditions. (15) indicates that, after the air nozzle 7 is attached, the mass reduction m8 necessary for perfectly balancing the rim 83 is again expressed by the formula (17).

Of course, as an alternative to the seventh and eighth embodiments described above, it is also possible to reduce or eliminate the imbalance of the wheels 71 and 81 in a manner similar to the combination of the second embodiment described above or such an embodiment. In other words, instead of or in addition to the region 7605, the replacement region 7605, or the region outside the spoke outer region 7605, such as the spoke outer regions 7604 and 7606 and/or the spoke outer regions 7604b and 7605a, etc., The formation of two places is reduced in thickness, so that the mass is reduced.

Furthermore, in a manner similar to the concept of the third embodiment, in pairs of diametrically opposite spoke outer regions, such as in spoke outer regions 7603 and 7607, or in spoke outer regions 7602, 7604, 7606, 7608, or Further, in the spoke outer region 7608-7608 representing all regions extending between the spoke group regions except the spoke outer region 7601 opposite to the spoke outer region 7605, the quality can be further reduced. Small same amount or different amount.

More generally, it should be understood that in the case of spokes of a single piece of rim or as any type of spoke connection, whether in a single or a group, and in the case of an odd spoke type, in the area including a spoke, the spoke The outer region contains a hole for the air supply nozzle, and/or on at least one pair of rims centered on the hole for use with the air supply nozzle, and is disposed outside the spoke outer region of the hole for use with the air supply nozzle, total It is possible to completely eliminate the dynamic imbalance by reducing its thickness.

Where the rim has a joint region, such as a metal rim, it should be understood that it is generally possible to provide any number of spoke outer regions with reduced mass, so that it is primarily at the greatest local mass (usually the joint region) ) on the center of the half rim.

In the case where the joint area and the hole for the gas nozzle are completely opposite, or in the case of the entire opposite spoke area, it is considered that the two partial mass increases are equivalent to being arranged at the point of the heaviest one. The local quality is increased and the general concept described above can be applied. Thus, for any spoke pattern, whether the spoke connections are separate or in groups, and in the case where the spoke pattern is odd, in the outer spoke region including the heaviest mass increase and/or in at least one pair in the same half In the rim, where the outer region of the spoke is configured to be symmetrical, the dynamic imbalance can always be completely eliminated by reducing its thickness. For the asymmetrical change in the wall thickness of the second subset of regions involved in the reduction in thickness, it may be considered that the joint region and the aperture for the nozzle are slightly offset from the exactly opposite position.

When the joint area and the hole for the nozzle are not completely opposite, the diameter relative to the position where the weight is the heaviest through the local mass and the half of the wheel centered on the heaviest local mass increase can be configured The lightest position increases the quality of the outermost area of at least one spoke on the same side.

In particular, where the spoke pattern is a spoke set, this area will be the spoke outer area adjacent to the location where the local mass increase is the heaviest, or in the same range of adjacent areas.

However, it should be clear that in the case of a rim with a joint, such as a metal rim, the invention is not limited to the joint region being completely opposite or substantially opposite with respect to the gas nozzle. Those skilled in the art will appreciate that if these elements are brought together, the amount of mass reduction in the outer region of the reduced spoke should be substantially increased, and the outer area of the spoke should be placed in the proper position, closer to the heaviest The local mass increases the position, usually the joint.

It is also possible to separately compensate for the local mass increase represented by the joint region and the nozzle, for example, the thickness of the outer region of the spoke including the joint and the outer region of the spoke including the hole including the air supply are appropriately reduced, and/or the spoke including the joint The outer regions of the pairs of spokes and the outer regions of the spokes including the spoke outer regions of the holes for the air nozzles are appropriately reduced in thickness.

In addition to the above-mentioned general criteria, further reductions can be implemented on at least one outer spoke region group, said groups being rotationally symmetrical, since in this case the mass of the group is zero. A suitable set includes two diametrically opposed regions, a 120° angular triplet region, and the like.

If it is desired to reduce the weight of the rim, substantially only one or two complete or large thickness spoke outer regions of the rim can be obtained under all conditions, or only one or two in the spoke group The rim of the outer region of the spoke extending between.

It is worth re-emphasizing that in order to compensate for the asymmetrical arrangement of the holes and/or joints for the gas nozzles in the respective outer spoke regions, or to compensate more precisely for the two partial mass increases that are not exactly opposite, the thickness of the individual regions The reduction can have an asymmetrical geometry.

Furthermore, the solution of the eighth embodiment forms three different thickness portions in the outer spoke region for use in the hole including the air supply nozzle, and if the thickness reduction provided in accordance with the present invention must also include such a region, in particular, The mouth is heavier than the connection area, and the metal joint can also be used to apply the solution.

7. . . Gas nozzle

12, 42. . . Wheel hub

11, 21, 31, 41, 51, 61, 71, 81. . . Spoke wheel

13, 23, 33, 43, 53, 63, 73, 83. . . Rim

14. . . Spokes

121, 131. . . Base

132. . . Opening

133. . . On Bridge

134. . . Joint area

135. . . Receiving hole

136. . . Metal insert

136a. . . casing

137. . . room

138a, 138b. . . Side wall

141. . . Spoke

142. . . Internal thread component

143. . . head

144. . . Bending

145. . . Metal plate

234. . . Combined area

334, 434, 534, 634. . . Joint area

335, 435, 535, 635, 735, 835. . . hole

1501-1516 2501-2516 3501-3516 4501-4521 5501-5508 5505a-c 6501-6507 6504a-c 7501-7508 7505a-c 8501-8508 8505a-c. . . Spoke mounting area

1601-1616 2601-2616 3601-3616 4601-4621 5601-5608 5605a-b 6601-6607 6604a-b 7601-7608 7605a-b 8601-8608 8605a-b. . . Spoke area

1 is a perspective view of a wheel according to a first embodiment of the present invention; FIG. 2 is a partial perspective view of a rim portion to which a spoke is coupled; and FIG. 3 is a wheel through a first wheel mounted with a nozzle. A cross-sectional view of the ring; Figure 4 is a perspective view of a pair of inserts for rim engagement; Figure 5 is a perspective view of the sleeve for rim engagement; Figure 6 is a fifth view embedded in the rim FIG. 7 and FIG. 8 are views corresponding to the second embodiment and corresponding to FIG. 1 and FIG. 3; FIG. 9 and FIG. 10 relate to the third embodiment, respectively. 1 and FIG. 3; FIG. 11 is an enlarged view of a rim portion in FIG. 10; and FIGS. 12 and 13 are views corresponding to the fourth embodiment and respectively corresponding to FIGS. 1 and 3; Fig. 14 is an enlarged view of a rim portion in Fig. 13; Fig. 15 and Fig. 16 are views relating to the fifth embodiment, respectively corresponding to Figs. 1 and 3; Figs. 17 and 18 are related to The sixth embodiment corresponds to the views of FIGS. 1 and 3, respectively; and the 19th and 20th drawings relate to the seventh embodiment and respectively correspond to the first and third figures. Figure 21 is a magnified view of the rim portion of Figure 20; Figure 22 and Figure 23 are views of the eighth embodiment, corresponding to Figures 1 and 3, respectively; Figure 23 is an enlarged view of the rim portion of the figure.

7. . . Gas nozzle

11. . . Spoke wheel

12. . . Wheel hub

13. . . Rim

14. . . Spokes

121, 131. . . Base

134. . . Joint area

135. . . Receiving hole

141. . . Spoke

142. . . Internal thread component

143. . . head

144. . . Bending

1501-1516. . . Spoke mounting area

1601-1616. . . Spoke area

Claims (35)

a rim (13; 23; 33; 43; 53; 63; 73; 83) of a bicycle spoke wheel (11; 21; 31; 41; 51; 61; 71; 81), including a spoke mounting area (1501-1516) ;2501-2516;3501-3516;4501-4521;5501-5508,5505a-c;6501-6507,6504a-c;7501-7508,7505a-c;8501-8508,8505a-c) and the outer spoke area ( 1601-1616; 2601-2616; 3601-3616; 4601-4621; 5601-5608, 5605a-b; 6601-6607, 6604a-b; 7601-7608, 7605a-b; 8601-8608, 8605a-c) Characterized in that the outer spoke region includes a first subset of spoke outer regions having a first average wall thickness and a second sub-group of spoke outer regions (1601; 2602, 2616; 3601-3616; 4601-4621; 5601- 5604, 5606-5608; 6601-6603, 6605-6607; 7605; 8605), the average wall thickness of each spoke outer region of the second subgroup is smaller than the first average wall thickness, and the spoke outer region of the second subgroup At least a partial mass increase (7; 134, 234, 334, 434, 534, 634, 734, 834) of the wheel is at least partially compensated for at least partially balancing the weight balance of the wheel. A rim according to claim 1 wherein the at least one partial mass increase comprises a first partial mass increase at the first location and the second subset comprises a spoke outer region comprising the first location. The rim of claim 1, wherein the at least one partial mass increase comprises a first partial mass increase at the first location, in the first position On the central half of the rim, the second subset includes at least one pair of spoke outer regions that are configured to be symmetric with the first location. The rim of claim 2, wherein the at least one partial mass increase further comprises a second partial mass increase that is less than the first partial mass increase and configured to be substantially opposite one of the spokes opposite the first position The second position in the outer area. The rim of claim 1, wherein the at least one partial mass increase comprises a first partial mass increase at the first location and a second partial mass increase, the second partial mass increase being less than the first partial mass increase, And configured to be located at a second location in the outer spoke region that is not exactly opposite the first location, and wherein the second subset includes an outer spoke region configured to be located in a diameter through the first location The same side of the second position is disposed in one half of the rim centered on the first position. The rim of claim 5, wherein the second subset includes the outer spoke region closest to the first location, which has the same extent as the outer spoke region including the first partial mass increase. A rim according to claim 6 wherein the second sub-group comprises an outer spoke region disposed adjacent to the first position. Such as the rim of claim 2, wherein the at least one local quality The amount increase includes a first partial mass increase at a first position and a second partial mass increase, the second partial mass increase being less than the first partial mass increase and disposed at the second position, the second subset An outer spoke region including the first location and a spoke outer region including the second location are included. The rim of claim 1, wherein the at least one partial mass increase comprises a first partial mass increase at a first location and a second partial mass increase, the second partial mass increase being less than the first partial The mass is increased and disposed at the first position on the half rim centered on the first position, the second subgroup includes at least a pair of spoke outer regions configured to be symmetric with the first position, and configured On a half rim centered on the second position, the second subset includes at least one pair of spoke outer regions that are configured to be symmetric with the second position. The rim of claim 2, wherein the second subgroup further comprises at least one outer spoke region group, the regional group being balanced with the axis of the rim. A rim according to claim 10, wherein the at least one zone group comprises at least one pair of diametrically outer spoke regions. For example, in the rim of claim 1, wherein the outer area of the spokes of the second subgroup has the same range. For example, the rim of the first scope of the patent application, wherein the second subgroup The range of the area outside the strip is different. The rim of claim 1, wherein the second subgroup consists of 1 or 2 spoke outer regions. A rim according to claim 1 wherein the second subgroup comprises all spoke outer regions except for one or two spoke outer regions. A rim according to claim 1, wherein the second sub-group comprises all spoke-out regions disposed between the spoke groups except for one or two spoke outer regions. For example, in the rim of claim 1, the average outer wall thickness of all the spoke outer regions of the second subgroup is the same. For example, in the rim of claim 1, the quality of each of the spoke-out regions of the second sub-group is symmetrically distributed. The rim of claim 1, wherein the quality of the at least one spoke outer region of the second subgroup is asymmetrically distributed. The rim of claim 1, wherein in each of the spoke outer regions of the second subgroup, the transition from the thickness of the adjacent spoke mounting region is sharp. The rim of claim 1, wherein in the outer spoke region of the second subgroup, the transition from the thickness of the adjacent spoke mounting region is progressively performed along a length of rim. A rim according to claim 1 wherein the reduction in the average wall thickness of the outer region of the spoke of the second subgroup is in the lower bridge of the rim. The rim of claim 22, wherein the second subgroup includes an outer spoke region including a hole for the gas nozzle, the region having an intermediate portion including a nozzle hole and two end regions, the middle The wall thickness of the area is larger than the end area. The rim of claim 1, wherein the first average wall thickness is equal to an average wall thickness of the spoke mounting area. A rim according to claim 1 wherein the at least one partial mass increase comprises a gas nozzle adapted to be coupled to the rim. A rim of claim 1, wherein the at least one partial mass increase of the wheel comprises a joint region of the rim. A bicycle spoke wheel comprising a rim according to any one of claims 1 to 26. A method of manufacturing a rim of a bicycle spoke wheel, comprising the step of forming a rim having a spoke mounting area and an outer spoke area, wherein the first sub-group of the spoke outer area is formed by a first average wall thickness, outside the spokes A second subset of the regions are each formed with an average wall thickness that is less than a first average wall thickness, the outer spoke regions of the second subset being distributed to at least partially compensate for at least one local mass increase of the wheel for at least partially balancing The weight of the wheel is balanced. The method of claim 28, comprising, in the mold for forming the rim, providing more of the outer spoke region of the first subset than the outer spoke region of the second subset in the polymeric material matrix The step of structural fiber. The method of claim 28, comprising the step of forming a rim having equal average wall thicknesses for all outer spoke regions, and the step of removing material from the second subset of the outer spoke regions. The method of claim 30, wherein the material removal step is accomplished by machining. The method of claim 31, wherein the machining is grinding. The method of claim 30, wherein the material removal step Completed by chemical etching. The method of claim 30, wherein the material removal step is performed via spark erosion. The method of claim 28, wherein the rim is based on any one of claims 1 to 26 of the patent application.